/*
 * TMap Designer - A Thematic Map design software
 * Copyright (C) 2006 World Health Organization
 * http://www.who.int
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package who.tmap.ui.undo;

import java.awt.Color;
import java.awt.geom.Point2D;

import who.tmap.toolkit.MappingToolKit;


public interface UndoManager {
	
	void push( UndoAction action );
	
	// For convenience
	void push( int action, Object obj );
	void push( int action, Object obj, Color color );	
	void push( int action, Object obj, Point2D anchorPt, Point2D dragPt );	
	void push( int action, Object obj, Point2D anchorPt, Point2D dragPt, int handleIdx );		
	
	UndoAction pop();
	UndoAction popRedo();
	
	boolean empty();
	
	void clear();
	
	UndoAction undo() throws Exception;
	UndoAction redo() throws Exception;
	
	void setMtk( MappingToolKit mtk );
	
}
